Radio fuse keeps blowing

Check the fuse box there is one for radio but sometimes lighter shares the same fuse as radio.

There are at least two reasons why this could be happening. Firstly (and this has happened to me) there could be a foreign body dropped inside the lighter socket, preventing electrical contact. Have a look and remove. Secondly the fuse to the cigarette lighter may be blown. Beware! Fuses do not blow without a reason. If blown, it could be that a conducting foreign body may have been dropped into the socket. Remove the fuse cover and locate the appropriate fuse. DO NOT REPLACE WITH A HIGHER AMPERAGE FUSE. Should be no more than 20 amps. If the fuse blows again, try the lighter on another vehicle. ( A good friend??) If that blows the fuse too then the lighter is faulty with a low resistance. If not then the lighter circuit on the vehicle needs to be checked by an auto electrician. Good luck!
Cheers, Don.

when the lighter is not pushed in does the fuse still blow? If not get a new plug in bit. Try some other plug in unit (GPS--dash cam--tyre compressor) or anything that uses a plug for the cigarette lighter and see it the fuse still blows.

That circuit F-2,may be shared with the cigarette lighter and it may be causing this,disconnect lighter wire and see if fuse still blows.

Replace the lighter it is shorted out, the lighter is Held in by a big stamped nut on the bank of the threaded barrel.

Wish this one could be simple...what changes have you made recently? If you changed the radio or cigarette lighter, the new one could have a short in it...first try disconnecting (unplug the lighter) and retry...if still blows fuse, re-connect the lighter, and disconnect the new radio...if this does not point out the problem...inspect all wires for a missing section of insulation. You should also re-insulate all the connections that you made in the install...Hope this helps.

take your cigarette lighter element out and replace the fuses, if it doesn't blow the fuse than replace your lighter element its shorted.If it still blows fuses then you have a short to ground on the circuit some place and youll need a schematic to diagnosis it further.

change the socket

Replace the cigarette lighter. Look to find out what else is on the instument cluster circuit, as that may be the problem, or a bad cluster.